Pump



P 1950 w. PHILLIPS 2,522,633

' PUMP Filed April 30, 1 946 E 4: 3mm" E vwi/w/ J Patented Sept. 19, 1950 UNITED ,STATES PATENT OFFICE 2,522,633 7 2 U William F. Phillips, Van Dyke, Mich, Application April 30, 1946, Serial No. 666,157 g provision of such'a device which is'sturdy and durable in construction and relatively simple and inexpensive to manufacture and assemble.

Other objects reside in the combinations of elements, arrangements of parts, and features 015 construction, all as will be morefully pointed out hereinafter and disclosed in theaccompanying drawings, wherein there is shown a preferred embodiment of this inventive concept.

In the drawings:

: Figure 1 is a side elevational view of one form ofpump showing features of the instant invention, portions thereof being broken away.

Figure 2 is a longitudinal sectional view of the apparatus of Figure 1.

Figure 3 is a sectional view taken along the line 33 of Figure 2, as viewed in the direction indicated by the arrows.

Figure 4 is a sectional View taken substantially along the line 4--4 of Figure 2, as viewed in the direction indicated by the arrows.

Similar reference characters refer to similar parts throughout the several views of the drawings.

Referring now to the drawings, there is indicated at I a tube or sleeve threaded at its upper extremity at I l to accommodate a cap l2, knurled, as at l3, 0n the exterior surface thereof, and provided with a centrally positioned aperture l4, through which extends the upper extremity of a tubular piston rod 15. The upper extremity of the rod I5 is threaded, as at I6, to engage a boss I! forming a portion of a handle member I8. The handle member I8 is provided interiorly with a curved tube I 9 which extends to an opening at one end thereof, and communicates with the upper extremity of the tubular member l5. Threads 2| may be provided, if desired, on the extremity of the handle adjacent the opening 20 in order to permit the application thereto of a flexible tube or the like. The aperture this invention -is the pro the outlet for fluid pumped 1 Claim. (01. 103-188) and a relative minimum of operating Zll serves as an outlet for fluid from the pump" when the device is'operated in a manner to be more fully described hereinafter."

The lowerportion of the sleeve ill is provided with exterior threads 25 toaccommodate corresponding interior threads onthe flanges 26 of an end cap' 21 provided withfa dep'ending boss 28 having a centrally positioned bore 29 there-J through serving as an inlet for thepump mechanism. The interior threads of the end cap 21 do not extend to the bottom thereof, so that when the same is screwed on the tube ill, a space is provided between the lower end of the tube I9 7 and the interior surface of the end cap foraccommodating a platev'alve 3!].

The valve "30 is adapted to seaton a raised lip atthe upper end of the boss 25, and is provided withoutstanding lugs 3! which serve to center the valve'in the cylindrical flange 26 of the end cap 27, and to 'permit the passage of fluid around the valve 30' when the same is lifted from its seat during the suction stroke of the piston. The lower end of raised flange 36 functioning asa seat for a second plate valve 38. The valvefiil'is also'provided with outstanding lugs 39 which center the same? in'the interior orthe pump piston, and permit thefiow 'cf fluid around the valve when the same is lifted from. its seat "on the downward or pres'- sure stroke of the pump piston.

The pump piston is secured to the lower end of the tubular member I 5, said end being threaded, as indicated at 40, to engage corresponding threads on the interior of a boss 4|. The boss 4| is formed centrally of and extending from the upper face of head 52 of the piston. The skirt 43 of the piston is formed integral-1y with said head, and the thickness of the wall of said skirt is reduced at the lower end thereof. The annular member 35 is secured to the lower end of the skirt 43, being soldered or brazed thereto, after the plate valve 38 has been inserted in the lower end of said piston.

In operation, the valve 38 is closed and the valve 30 is opened, as a partial vacuum is created in the tube II) on the upward stroke of the pump piston. Fluid is drawn into the interior of the pump around the circular body of the valve 30, which is spaced from the interior wall of the flange 26 of the end cap 27 by the lugs 3|. It will be understood that the distance through which the valve 30 is permitted to lift on the suction stroke before movement thereof is stopped by the lugs 3| engaging the lower end of the tube 10 as an abutment, is insuflicient to permit the valve to be upset, that is, to assume an edgewise position in the bore of the tube l0.

On the downward or pressure stroke of the piston, the valve 30'is forced into a closed position, and the valve 38 is lifted from its seat until it is stopped by the lugs 39 contacting an-internal annular abutment within the skirt 43 which abutment is formed by the difference in the thickness of the wall of the skirt adjacent this. lower end. It will be understood that this abutment is formed sufficiently close to the annular member 35 to prevent the valve 38 from. bein upset. The fluid in the portion of the tube It) below the piston is forced around the valve 38 through the spacing between the circular bodythereof and the interior wall of the skirt 43, which. spacing is providedby the. lugs. 39. The fill-id then flows upwardly through. the tube and is discharged through the opening 20.,

From the foregoing it will now be seen that there herein provided an improved pump con.- struction which accomplishes all the objects of this. invention, and others, including many advantages of great practical utility and commer cial. importance,

As. many embodiments maybe madev of this inventive concept, and as many modifications may be. made the. embodiment hereinbefore shown and described, it. is to be. undersood that all matter herein is to be, interpreted. merely as illustrative and not in a. limiting sense.

I claim:

In a. pump comprising, a tubular casing forming av pump barrel, the latter being externally threaded upon the. lower end thereof, an upper end upon the pump barrel having a central opening, an end cap. having an intermediate, opening and an upwardly-projecting internally-threadedflange fitting upon thelower threaded end of the pump barrel, a depending discharge pipe secured to the end cap and communicating with the intermediate opening, thereof, a piston re-- eiprocable in the pump barrel, and a tubular member secured to the piston to serve as a piston rod for reciprocating the piston in the barrel and extending slidably up through the centralopening in the upper end of said barrel, the features which include a substantially fiat bottom in the end cap spaced a short distance below the lower 4 threaded end of said barrel and a raised lip surrounding the intermediate opening in the fiat bottom of said end cap, a plate valve disposed in the space between said lower threaded end of the barrel and the raised lip in said end cap and having a plurality of radial lugs extending beneath said end of the barrel for centering the plate valve within said end cap, the piston being hollow and having a cylindrical skirt containing an internal chamber, a. piston head above the internal chamber integral with the cylindrical skirt of the piston, a central boss depending rigidly from the piston head into said internal chamber and having an internally-threaded bore, a threaded lower end upon said tubular member fitting the internally threaded bore in said central, boss, the lower portion of said cylindrical skirt having an internal annular recess forming an annular stop or shoulder above the recess, an

annular member secured. to the lower end of said cylindrical skirt and'hav-ingr a central opening therein, a raised flange surrounding the latter central opening a distance below the; annular stop or shoulder in therpiston, and a second plate valve disposed between. said annular stop-or shoulder and said raised flange'and: having ai. plurality of radial lugs extending intojsaid annu-r' lar recess to center the latter'pl-ate valve; there-'- being a transverse handle fixed on the upper. end of said tubular member above said pump valve and having a passage extending inwardly through one end 'of' the handle and: communicat'-' ing with the tubular member, and the latter-0H8. end of said handle ibeing threaded and adapted for connection toa hoseor theliken '1- WILLIAM F. Perm-rs;

REFERENCES CIT-ED The following references are or record in UNITED. sTaTnsrAran'rs Number Name w 2-1.8,291 London 1 Aug. 5 1.879 384,185 Althouse are June 5, 1888 625,023 Dollar May 1-6,- 1893: 675,062 Guy May 28?, .1901 1,657,469 Heston 'Jan. 31,1928: 2,062,206 Browne Nov. 24,1936 2,069,156 Bernhardt "Jan. 26-, .1931; 2,134,622

Peterson Oct. 25., 1938 

